The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol. 34, Part XXX 
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Figure 5. The part of the model of the prayer-wheel gallery. 
(c) (d) 
Figure6. The two types of 3D models of the murals 
By section 2 and section 3, we obtain three types of 3D models 
of the mural: 3D model without reflectance value, 3D model 
without reflectance value, 3D orthophoto, and we also get a 
panoramic of the mural. 
We could recognize hollows and cracks from 3D model without 
reflectance value of mural. We could see shedding traces and 
cracks from 3D model with reflectance value of mural. We 
could distinguish the more types of diseases from 3D 
orthophoto. For example, we could see a hollow from figure 
6(a), and could not see it from figure 6(b); we could see 
shedding traces from figure 6(b), and could not see it from 8(b); 
we could recognize the cracks from figure 6(c) and 6(d). We 
could see the detailed edge features of the murals from 3D 
model without reflectance value, just like figure 6(b’). 3D 
model without reflectance value helps to create the line 
drawings. Figure 6(a) and 6(b) are the 3D models of a mural 
from Miscellaneous Tang Temple. 
Of course, there are many diseases that are recognized by non 
professionals. Thereby, we asked some professionals to 
distinguish the more types of diseases from the panoramic of